代理模式模型

为其它对象提供一种代理以控制对这个对象的访问.

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我们把钱放在银行卡里，当卖完东西要向老板付钱的时候，只要刷卡就搞定了。所以，这里，银行卡代理了自己存在银行的现钞，并在买东西是执行付钱的动作。这样是不是非常的方便呢！出门时，妈妈再也不用担心我的钱被小偷偷走了。

代码如下：

namespace 银行卡买东西
{
     class Boss  //商品类
    {
        private string name;
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
 
    }

    interface BuyGoods  //买东西的接口
    {
        void BuyClothes();  //买衣服
        void BuyFood();   //买吃的
        void BuyBooks();   //买书
 
    }

 
    class MyCash : BuyGoods    //银行卡中的现金
    {
        Boss boss;  //定义收钱的人
        public MyCash(Boss boss)   
        {
            this.boss = boss;
            
        }

        public void BuyClothes()
        {
            Console.WriteLine(boss.Name + ",我买这件衣服了，给你钱。");
        }

        public void BuyFood()
        {
            Console.WriteLine(boss.Name + ",我要吃这个，给你钱。");
 
        }

        public void BuyBooks()
        {
            Console.WriteLine(boss.Name + ",我要这本书，给你钱。");
 
        }
 
    }

    class BankCard:BuyGoods 
    {
        MyCash myRMB;
        public BankCard(Boss boss)
        {
            myRMB = new MyCash(boss);
        }

        public void BuyClothes()
        {
            myRMB.BuyClothes();
        }

        public void BuyFood()
        {
            myRMB.BuyFood();

        }

        public void BuyBooks()
        {
            myRMB.BuyBooks();

        }
 
    }



    class Program
    {
        static void Main(string[] args)
        {
            Boss LaoBan = new Boss();
            LaoBan.Name = "老板";

            MyCash ACBCCard = new MyCash(LaoBan);

            ACBCCard.BuyClothes();
            ACBCCard.BuyFood();
            ACBCCard.BuyBooks();




        }
    }
}

运行后如图：

PS：我要是真的有张可以这样消费的卡就好了。